IPython/nbconvert/transformers/__init__.py

# Class base Transformers
from .base import Transformer
from .convertfigures import ConvertFiguresTransformer
from .svg2pdf import SVG2PDFTransformer
from .extractoutput import ExtractOutputTransformer
from .revealhelp import RevealHelpTransformer
from .latex import LatexTransformer
from .sphinx import SphinxTransformer
from .csshtmlheader import CSSHTMLHeaderTransformer

# decorated function Transformers
from .coalescestreams import coalesce_streams